You should try to identify which ports are really used by Skype.
To do so select the !! attribute for Skype application in the Application Filtering, and the log will contain all ports Skype is trying to use.

Well, (1.) Skype seems to use some strange port/protocols. Many people complain that it uses "proprietary" standards.

(2.) According to the manual it tries to use TCP port 80/443 in case other suggested ports are somehow blocked. However, my log indicates that it permanently tries to use a various range of ports between 5000-50000.
It looks like P2P traffic. My log is flooded with outbound attempts of different ports/IPs.

So basically I have to open all ports for outgoing traffic Maybe I am wrong and some Skype experienced users have a solution?

Right now I feel that I could also deactivate my LnS....currently Skype transfers it into something like a swiss cheese

I'm using Skype sometimes too, and yes you are right, in the application filtering part it's not possible to select precisely the ports.
Until now, I had no port selection for the skype application. Trying just "80;443;45116" doesn't work. I've tried "1024-5000;45116" (for both TCP and UDP) and then it worked.

So, I use/allow Skype.exe on demand only... not very convenient, but there is still E-mail and other chat clients...Yes, and I might use the good old telephone from time to time

Thomas

Frederic said:

Hi Thomas,

I'm using Skype sometimes too, and yes you are right, in the application filtering part it's not possible to select precisely the ports.
Until now, I had no port selection for the skype application. Trying just "80;443;45116" doesn't work. I've tried "1024-5000;45116" (for both TCP and UDP) and then it worked.